Imprint Apparatus Drop Recipe Determination via Iterative Curing

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Solution Overview

Problem

The existing methods for determining a drop recipe for imprint processes are time-consuming and costly, requiring iterative optimization of the imprint process and pattern evaluation to achieve a final recipe that satisfies quality conditions.

Innovation Solution

The method involves repeatedly arranging an imprint material on a substrate according to a provisional arrangement, curing it, and adjusting the arrangement until the pattern quality meets predetermined conditions, with the imprint apparatus determining the final arrangement information based on the latest satisfactory provisional arrangement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the drop recipe is optimized by iterating the imprint process and pattern evaluation, then the pattern quality meets the specifications, but an enormous time and cost are needed

Engineering Contradiction:
Improvepattern qualityVSAvoidtime and cost for optimization
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary actions by predicting the pattern quality before actually executing the imprint process. The prediction unit calculates quality metrics based on the drop recipe and pattern data, allowing the system to identify problematic recipes without wasting time on actual printing and evaluation cycles.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention replaces the mechanical trial-and-error process (actual imprinting and physical pattern evaluation) with an information-based prediction system. The prediction unit uses computational methods to substitute for the physical iteration process, dramatically reducing the time and cost while maintaining optimization effectiveness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If the drop recipe is determined through iterative optimization, then the final recipe satisfies quality conditions, but the process requires enormous time and cost

Engineering Contradiction:
Improvequality condition satisfactionVSAvoidrecipe determination efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system implements feedback by using the prediction unit to continuously evaluate the quality of generated drop recipes. The quality determination unit provides feedback signals that guide the generation unit to refine and improve recipes, enabling rapid iteration without physical printing cycles and significantly enhancing productivity while maintaining reliability.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The invention creates virtual copies of the pattern quality evaluation through prediction calculations. Instead of physically printing and evaluating each recipe variant, the system uses computational models to copy the evaluation process, allowing multiple iterations to occur simultaneously and dramatically improving efficiency.

Inventive Principle:
Principle #26Copying

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach significantly reduces the time and cost associated with determining a drop recipe by iteratively refining the pattern arrangement until it meets quality standards, enhancing the efficiency of the imprint process.

Implementation Method 1

curing the imprint material by irradiating the imprint material with UV light

Methodology Applied
Scientific EffectPhotopolymerisation: Photopolymerisation

Data Source

PatentUS11366400B2Method of determining drop recipe, imprint apparatus, and article manufacturing method
Publication Date: 2022.06.21 CANON KK
  • US11366400B2 patent drawing
  • US11366400B2 patent drawing
  • US11366400B2 patent drawing

AI summary

A method of determining information indicating an arrangement of an imprint material in an imprint apparatus, includes repeating, by the imprint apparatus, a process of arranging an imprint material on a substrate in accordance with a provisional arrangement, forming a pattern by curing the imprint material in a state in which a mold is brought into contact with the imprint material, and changing the provisional arrangement based on the pattern, until quality of the pattern satisfies a predetermined condition, and determining, by the imprint apparatus, information indicating the arrangement of the imprint material based on the latest provisional arrangement at a stage where the quality of the pattern satisfies the predetermined condition.